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7 papers · 2 filters
Getting information via a quantum measurement: the role of decoherence
Pietro Liuzzo-Scorpo, Alessandro Cuccoli, Paola Verrucchi
In this work we investigate the relation between quantum measurements and decoherence, in order to formally express the necessity of the latter for obtaining an informative output…
Universal state orthogonalizer and qubit generator
Antonio S. Coelho, Luca S. Costanzo, Alessandro Zavatta +3
The superposition principle is at the heart of quantum mechanics and at the root of many paradoxes arising when trying to extend its predictions to our everyday world. Schroedinger…
Classical noise assists the flow of quantum energy by `momentum rejuvenation'
Ying Li, Filippo Caruso, Erik Gauger +1
An important challenge in quantum science is to fully understand the efficiency of energy flow in networks. Here we present a simple and intuitive explanation for the intriguing ob…
Optimal preparation of quantum states on an atom chip device
Cosimo Lovecchio, Florian Schäfer, Shahid Cherukattil +6
Atom chips provide compact and robust platforms towards practical quantum technologies. A quick and faithful preparation of arbitrary input states for these systems is crucial but…
Large suppression of quantum fluctuations of light from a single emitter by an optical nanostructure
Diego Martín Cano, Harald R. Haakh, Karim Murr +1
We investigate the reduction of the electromagnetic field fluctuations in resonance fluorescence from a single emitter coupled to an optical nanostructure. We find that such hybrid…
Optimal qudit operator bases for efficient characterization of quantum gates
Daniel M. Reich, Giulia Gualdi, Christiane P. Koch
For certain quantum operations acting on qubits, there exist bases of measurement operators such that estimating the average fidelity becomes efficient. The number of experiments r…